On Tue, Mar 16, 2004 at 11:54:49 +0900, Patrick Shirkey wrote: > I have been asked to work on a large outdoor party again this year. > > This time we are going to have multiple zones with powerful equipment. > > Can anyone give me some tips on appropriate spacing to enable a good mix > of cleaness and sound fusion? > > For example if I have 4 x 20KW systems how far apart from each other > should they be so they don't overpower each other? I dont know how much SPL you get from the equipment, but if you are Xm from one speaker and X*2m from the other, the nearest one will only be about 12dB louder. the inverse square power law gives difference = (distance from A / distance from B)^2 in dB's 20 * log10(difference); so to get 40dB's of difference (seems like a reasonable minimum) you have to be 10x nearer to the nearest stack than the next nearest. How loud those dB's appear to be depends on what the SPL is, I think you need more difference with a higher SPL, human ears compress, especially at high volumes. Hope that helps, Steve
